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1. 发明申请

US20060136198A1 Method and apparatus for low bit rate encoding and decoding 有权
标题翻译：用于低比特率编码和解码的方法和装置
公开(公告)号：US20060136198A1
公开(公告)日：2006-06-22
申请号：US11312457
申请日：2005-12-21
申请人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
发明人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L11/04
CPC分类号： G10L19/028 , G10L19/0017 , G10L19/02
摘要： An apparatus and method of low bit rate encoding and reproducing. The method includes transforming input audio signals in a time domain into spectral signals in a frequency domain, extracting important-spectrum components from the spectral signals in the frequency domain, and quantizing the important-spectrum components, extracting residual-spectrum components other than the important-spectrum components from the spectral signals in the frequency domain, and calculating and quantizing a noise level of the residual-spectrum components, and encoding the quantized important-spectrum components and the quantized noise level losslessly, and outputting encoded bitstreams.
摘要翻译：低比特率编码和再现的装置和方法。该方法包括将时域中的输入音频信号变换为频域的频谱信号，从频域的频谱信号中提取重要的频谱分量，并量化重要的频谱分量，提取重要频谱成分以外的残余频谱分量频域中的频谱信号的频谱分量，以及计算和量化残余频谱分量的噪声电平，以及对量化的重要频谱分量和量化噪声电平进行无损编码，并输出编码比特流。

2. 发明授权

US08086446B2 Method and apparatus for non-overlapped transforming of an audio signal, method and apparatus for adaptively encoding audio signal with the transforming, method and apparatus for inverse non-overlapped transforming of an audio signal, and method and apparatus for adaptively decoding audio signal with the inverse transforming 有权
标题翻译：用于音频信号的非重叠变换的方法和装置，用于对音频信号进行逆非重叠变换的变换，方法和装置对音频信号进行自适应编码的方法和装置，以及用于使用音频信号自适应地解码音频信号的方法和装置逆变换
公开(公告)号：US08086446B2
公开(公告)日：2011-12-27
申请号：US11295648
申请日：2005-12-07
申请人： Eunmi Oh , Junghoe Kim , Boris Kudryashov , Konstantin Osipov
发明人： Eunmi Oh , Junghoe Kim , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L19/02
CPC分类号： G10L19/022
摘要： A method and apparatus for transforming an audio signal, a method and apparatus for adaptively encoding an audio signal, a method and apparatus for inversely transforming an audio signal, and a method and apparatus for adaptively decoding an audio signal. The method of transforming an audio signal includes determining a transform unit into which the audio signal in a time domain is to be transformed into an audio signal in a frequency domain, and transforming the audio signal into an audio signal in the frequency domain according to the determined transform units using a window coefficient other than 0. Accordingly, it is possible to minimize distortion of the audio signal when encoding the audio signal even at a high bit rate while increasing efficiency of compression.
摘要翻译：用于变换音频信号的方法和装置，用于对音频信号进行自适应编码的方法和装置，用于对音频信号进行逆变换的方法和装置，以及用于对音频信号进行自适应解码的方法和装置。变换音频信号的方法包括：确定将时域中的音频信号变换为频域的音频信号的变换单元，并根据所述频域将音频信号变换为频域中的音频信号使用除了0以外的窗系数的确定的变换单元。因此，即使以高比特率对音频信号进行编码也可以最小化音频信号的失真，同时提高压缩效率。

3. 发明申请

US20070016404A1 Method and apparatus to extract important spectral component from audio signal and low bit-rate audio signal coding and/or decoding method and apparatus using the same 失效
标题翻译：从音频信号和低比特率音频信号编码和/或解码方法和装置中提取重要频谱分量的方法和装置
公开(公告)号：US20070016404A1
公开(公告)日：2007-01-18
申请号：US11480897
申请日：2006-07-06
申请人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
发明人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/0212
摘要： An method and apparatus to extract an audio signal having an important spectral component (ISC) and a low bit-rate audio signal coding/decoding method using the method and apparatus to extract the ISC. The method of extracting the ISC includes calculating perceptual importance including an SMR (signal-to-mark ratio) value of transformed spectral audio signals by using a psychoacoustic model, selecting spectral signals having a masking threshold value smaller than that of the spectral audio signals using the SMR value as first ISCs, and extracting a spectral peak from the audio signals selected as the ISCs according to a predetermined weighting factor to select second ISCs. Accordingly, the perceptual important spectral components can be efficiently coded so as to obtain high sound quality at a low bit-rate. In addition, it is possible to extract the perceptual important spectral component by using the psychoacoustic model, to perform coding without phase information, and to efficiently represent a spectral signal at a low bit-rate. In addition, the methods and apparatus can be employed in all the applications requiring a low bit-rate audio coding scheme and in a next generation audio scheme.
摘要翻译：一种提取具有重要频谱分量（ISC）的音频信号和使用该方法和装置提取ISC的低比特率音频信号编码/解码方法的方法和装置。提取ISC的方法包括通过使用心理声学模型来计算感知重要性，包括变换的频谱音频信号的SMR（信号到标记比）值，选择具有小于频谱音频信号的掩蔽阈值的光谱信号，使用 SMR值作为第一ISC，并且根据预定加权因子从被选择为ISC的音频信号中提取频谱峰值以选择第二ISC。因此，感知重要的频谱分量可以被有效地编码，以便以低比特率获得高音质。此外，可以通过使用心理声学模型来提取感知重要的频谱分量，以执行没有相位信息的编码，并且以低比特率有效地表示频谱信号。此外，该方法和装置可以用于需要低比特率音频编码方案和下一代音频方案的所有应用中。

4. 发明授权

US08615391B2 Method and apparatus to extract important spectral component from audio signal and low bit-rate audio signal coding and/or decoding method and apparatus using the same 失效
标题翻译：从音频信号和低比特率音频信号编码和/或解码方法和装置中提取重要频谱分量的方法和装置
公开(公告)号：US08615391B2
公开(公告)日：2013-12-24
申请号：US11480897
申请日：2006-07-06
申请人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
发明人： Junghoe Kim , Eunmi Oh , Konstantin Osipov , Boris Kudryashov
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/0212
摘要： An method and apparatus to extract an audio signal having an important spectral component (ISC) and a low bit-rate audio signal coding/decoding method using the method and apparatus to extract the ISC. The method of extracting the ISC includes calculating perceptual importance including an SMR (signal-to-mask ratio) value of transformed spectral audio signals by using a psychoacoustic model, selecting spectral signals having a masking threshold value smaller than that of the spectral audio signals using the SMR value as first ISCs, and extracting a spectral peak from the audio signals selected as the ISCs according to a predetermined weighting factor to select second ISCs. Accordingly, the perceptual important spectral components can be efficiently coded so as to obtain high sound quality at a low bit-rate. In addition, it is possible to extract the perceptual important spectral component by using the psychoacoustic model, to perform coding without phase information, and to efficiently represent a spectral signal at a low bit-rate. In addition, the methods and apparatus can be employed in all the applications requiring a low bit-rate audio coding scheme and in a next generation audio scheme.
摘要翻译：一种提取具有重要频谱分量（ISC）的音频信号和使用该方法和装置提取ISC的低比特率音频信号编码/解码方法的方法和装置。提取ISC的方法包括通过使用心理声学模型来计算感知重要性，包括变换的频谱音频信号的SMR（信号到掩模比）值，选择具有比频谱音频信号的屏蔽阈值小的光谱信号，该频谱信号使用 SMR值作为第一ISC，并且根据预定加权因子从被选择为ISC的音频信号中提取频谱峰值以选择第二ISC。因此，感知重要的频谱分量可以被有效地编码，以便以低比特率获得高音质。此外，可以通过使用心理声学模型来提取感知重要的频谱分量，以执行没有相位信息的编码，并且以低比特率有效地表示频谱信号。此外，该方法和装置可以用于需要低比特率音频编码方案和下一代音频方案的所有应用中。

5. 发明授权

US08301439B2 Method and apparatus to encode/decode low bit-rate audio signal by approximiating high frequency envelope with strongly correlated low frequency codevectors 有权
标题翻译：通过用强相关低频码矢量近似高频包络来对低比特率音频信号进行编码/解码的方法和装置
公开(公告)号：US08301439B2
公开(公告)日：2012-10-30
申请号：US11456946
申请日：2006-07-12
申请人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
发明人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L21/02 , G10L11/06 , G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/06
摘要： A method of encoding a low bit-rate audio signal includes quantizing and encoding a plurality of low frequency sub-bands of an audio signal in a frequency domain, generating a codebook of codevectors using sub-bands of the audio signal spectrum, detecting an envelope of another frequency sub-band of the audio signal and quantizing and losslessly-encoding the detected envelope, selecting a codevector most similar to the higher frequency sub-band spectrum from the generated codebook's codevectors and determining its codebook codevector index, and generating a bit stream. Decoding the low bit-rate audio signal includes restoring and dividing a bit stream into a plurality of first frequency sub-bands and at least one second frequency sub-band and inversely quantizing the first frequency sub-bands in the bit stream, restoring codebook codevector index information and envelope information for the second frequency sub-band, generating a codebook of codevectors using the inversely quantized first frequency sub-bands, and restoring the second frequency sub-band using the restored codevector index information and the envelope information.
摘要翻译：编码低比特率音频信号的方法包括对频域中的音频信号的多个低频子带进行量化和编码，使用音频信号频谱的子带生成码矢码，检测信号并对所检测的包络进行量化和无损编码，从所生成的码本的码矢量中选择与较高频子带频谱最相似的码矢，并确定其码本码矢量索引，并生成比特流。解码低比特率音频信号包括将比特流恢复和分割成多个第一频率子带和至少一个第二频率子带，并对位流中的第一频率子带进行逆量化，从而恢复码本码矢量用于第二频率子带的索引信息和包络信息，使用反量化的第一频率子带生成码本的码本，以及使用恢复的码矢量索引信息和包络信息来恢复第二频率子带。

6. 发明授权

US07835907B2 Method and apparatus for low bit rate encoding and decoding 有权
标题翻译：用于低比特率编码和解码的方法和装置
公开(公告)号：US07835907B2
公开(公告)日：2010-11-16
申请号：US11312457
申请日：2005-12-21
申请人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
发明人： Junghoe Kim , Eunmi Oh , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L19/00 , G10L11/00 , G10L21/02
CPC分类号： G10L19/028 , G10L19/0017 , G10L19/02
摘要： An apparatus and method of low bit rate encoding and reproducing. The method includes transforming input audio signals in a time domain into spectral signals in a frequency domain, extracting important-spectrum components from the spectral signals in the frequency domain, and quantizing the important-spectrum components, extracting residual-spectrum components other than the important-spectrum components from the spectral signals in the frequency domain, and calculating and quantizing a noise level of the residual-spectrum components, and encoding the quantized important-spectrum components and the quantized noise level losslessly, and outputting encoded bitstreams.
摘要翻译：低比特率编码和再现的装置和方法。该方法包括将时域中的输入音频信号变换为频域的频谱信号，从频域的频谱信号中提取重要的频谱分量，并对重要的频谱成分进行量化，提取重要的频谱成分频域中的频谱信号的频谱分量，以及计算和量化残余频谱分量的噪声电平，以及对量化的重要频谱分量和量化噪声电平进行无损编码，并输出编码比特流。

7. 发明申请

US20060122825A1 Method and apparatus for transforming audio signal, method and apparatus for adaptively encoding audio signal, method and apparatus for inversely transforming audio signal, and method and apparatus for adaptively decoding audio signal 有权
标题翻译：用于变换音频信号的方法和装置，用于对音频信号进行自适应编码的方法和装置，用于对音频信号进行逆变换的方法和装置，以及用于自适应地解码音频信号的方法和装置
公开(公告)号：US20060122825A1
公开(公告)日：2006-06-08
申请号：US11295648
申请日：2005-12-07
申请人： Eunmi Oh , Junghoe Kim , Boris Kudryashov , Konstantin Osipov
发明人： Eunmi Oh , Junghoe Kim , Boris Kudryashov , Konstantin Osipov
IPC分类号： G10L19/02
CPC分类号： G10L19/022
摘要： A method and apparatus for transforming an audio signal, a method and apparatus for adaptively encoding an audio signal, a method and apparatus for inversely transforming an audio signal, and a method and apparatus for adaptively decoding an audio signal. The method of transforming an audio signal includes determining a transform unit into which the audio signal in a time domain is to be transformed into an audio signal in a frequency domain, and transforming the audio signal into an audio signal in the frequency domain according to the determined transform units using a window coefficient other than 0. Accordingly, it is possible to minimize distortion of the audio signal when encoding the audio signal even at a high bit rate while increasing efficiency of compression.
摘要翻译：用于变换音频信号的方法和装置，用于对音频信号进行自适应编码的方法和装置，用于对音频信号进行逆变换的方法和装置，以及用于对音频信号进行自适应解码的方法和装置。变换音频信号的方法包括：确定将时域中的音频信号变换为频域的音频信号的变换单元，并根据所述频域将音频信号变换为频域中的音频信号使用除了0以外的窗系数的确定的变换单元。因此，即使以高比特率对音频信号进行编码也可以最小化音频信号的失真，同时提高压缩效率。

8. 发明申请

US20060004566A1 Low-bitrate encoding/decoding method and system 审中-公开
标题翻译：低比特率编码/解码方法和系统
公开(公告)号：US20060004566A1
公开(公告)日：2006-01-05
申请号：US11165569
申请日：2005-06-24
申请人： Eunmi Oh , Junghoe Kim , Sangwook Kim , Andrew Egorov , Anton Porov , Konstantin Osipov , Boris Kudryashov
发明人： Eunmi Oh , Junghoe Kim , Sangwook Kim , Andrew Egorov , Anton Porov , Konstantin Osipov , Boris Kudryashov
IPC分类号： G10L21/00
CPC分类号： G10L19/0204 , G10L19/0017 , G10L19/032
摘要： A low-bitrate encoding system includes: a time-frequency transform unit transforming an input time-domain audio signal into a frequency-domain audio signal; a frequency component processor unit decimating frequency components in the frequency-domain audio signal; a psychoacoustic model unit modeling the received time-domain audio signal on the basis of human auditory characteristics, and calculating encoding bit allocation information; a quantizer unit quantizing the frequency-domain audio signal input from the frequency component processor unit to have a bitrate based on the encoding bit allocation information input from the psychoacoustic model unit; and a lossless encoder unit encoding the quantized audio signal losslessly, and outputting the encoded audio signal in a bitstream format. Using the low-bitrate encoding system, it is possible to effectively compress data at a low bitrate, and thus to provide a high quality audio signal.
摘要翻译：低比特率编码系统包括：时间 - 频率变换单元，将输入的时域音频信号变换为频域音频信号; 频率分量处理器单元抽取频域音频信号中的频率分量; 心理声学模型单元，基于人类听觉特征对所接收的时域音频信号进行建模，以及计算编码比特分配信息; 量化器单元，根据从心理声学模型单元输入的编码比特分配信息量化从频率分量处理器单元输入的频域音频信号以具有比特率; 以及无损地编码量化音频信号的无损编码器单元，并以比特流格式输出编码音频信号。使用低比特率编码系统，可以以低比特率有效地压缩数据，从而提供高质量的音频信号。

9. 发明授权

US09087511B2 Method, medium, and system for generating a stereo signal 有权
标题翻译：用于产生立体声信号的方法，媒体和系统
公开(公告)号：US09087511B2
公开(公告)日：2015-07-21
申请号：US11707989
申请日：2007-02-20
申请人： Junghoe Kim , Eunmi Oh , Kihyun Choo , Miao Lei
发明人： Junghoe Kim , Eunmi Oh , Kihyun Choo , Miao Lei
IPC分类号： H04R5/00 , G10L19/008 , H04S1/00 , H04S3/00 , H04S7/00
CPC分类号： H04N13/161 , G10L19/008 , H04S1/007 , H04S3/008 , H04S7/308 , H04S2420/03
摘要： Surround audio decoding for selectively generating an audio signal from a multi-channel signal. In the surround audio decoding, a down-mixed signal, e.g., as down-mixed by an encoding terminal, is selectively up-mixed to a stereo signal or a multi-channel signal, by generating spatial information for generating the stereo signal, using spatial information for up-mixing the down-mixed signal to the multi-channel signal.
摘要翻译：环绕音频解码，用于从多声道信号选择性地产生音频信号。在环绕音频解码中，通过生成用于产生立体声信号的空间信息，例如通过编码终端下混合的下混合信号被选择性地上混为立体声信号或多声道信号，使用用于将下混合信号上混合到多声道信号的空间信息。

10. 发明授权

US07330139B2 Scalable audio data arithmetic decoding method, medium, and apparatus, and method, medium, and apparatus truncating audio data bitstream 有权
公开(公告)号：US07330139B2
公开(公告)日：2008-02-12
申请号：US11330168
申请日：2006-01-12
申请人： Junghoe Kim , Eunmi Oh , Changyong Son , Kihyun Choo
发明人： Junghoe Kim , Eunmi Oh , Changyong Son , Kihyun Choo
IPC分类号： H03M7/00
CPC分类号： G10L19/0017 , G10L19/24 , G10L21/038
摘要： A scalable audio data arithmetic decoding method, medium, and apparatus, and a method, medium, and apparatus truncating an audio data bitstream. The arithmetic decoding method of decoding a scalable arithmetic coded symbol may include arithmetic decoding of a symbol by using the symbol and a probability value for the symbol desired to be decoded, and determining whether or not to continue decoding by checking an ambiguity indicating whether or not decoding of the symbol to be decoded is completed. According to a method, medium, and apparatus of the present invention, data to which scalability is applied when arithmetic coding is performed in MPEG-4 scalable lossless audio coding can be efficiently decoded. Even when a bitstream is truncated, a decoding termination point can be known such that additional decoding of the truncated part can be performed.

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